package com.zeroli.common.commonutils;

import android.util.SparseArray;
import android.view.View;

/**
 * Created by zhh_li on 2016/10/21.
 */

public class ViewHolderUtil {
    // I added a generic return type to reduce the casting noise in client code
    @SuppressWarnings("unchecked")
    public static <T extends View> T get(View view, int id) {
        SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
        if (viewHolder == null) {
            viewHolder = new SparseArray<View>();
            view.setTag(viewHolder);
        }
        View childView = viewHolder.get(id);
        if (childView == null) {
            childView = view.findViewById(id);
            viewHolder.put(id, childView);
        }
        return (T) childView;
    }



	/*
	 * 在getview里面的用法
	 *
	 * @Override public View getView(int position, View convertView, ViewGroup
	 * parent) {
	 *
	 * if (convertView == null) { convertView = LayoutInflater.from(context)
	 * .inflate(R.layout.banana_phone, parent, false); }
	 *
	 * ImageView bananaView = ViewHolder.get(convertView, R.id.banana); TextView
	 * phoneView = ViewHolder.get(convertView, R.id.phone);
	 *
	 * BananaPhone bananaPhone = getItem(position);
	 * phoneView.setText(bananaPhone.getPhone());
	 * bananaView.setImageResource(bananaPhone.getBanana());
	 *
	 * return convertView; }
	 */
}
